Article: Nano-sized doped ZnO – 10% M: semiconductor magnetic materials Journal: International Journal of Nanoparticles (IJNP) 2010 Vol.3 No.4 pp.341 - 348 Abstract: The total density of states (DOS) deduced from the band structure calculations for the system Zn0.9M0.1O (M is a transition metal) has been successfully carried out. It is observed that the presence of a small gap only in the major state density which evidences and confirms the spintronic character of the compound. Single nanosized Zn1−xMxO phase has been successfully synthesised using mechanical alloying (ZnO and MxOy precursors) with a subsequent annealing at relatively low temperatures. XRD patters of the milled mixture shows the presence mainly of ZnO phase with broad peaks, an indication of an important reduction of the particle size to the nanometer scale. After annealing, both X-ray diffraction and magnetic measurements show the effect of the nature of the metal M on the phase formation and magnetic properties. Inderscience Publishers - linking academia, business and industry through research

Title: Nano-sized doped ZnO – 10% M: semiconductor magnetic materials

Authors: Mohamed Bououdina, El Kebir Hlil, Ahmad Al-Saie, Adnan Jaafar

Addresses: Nanotechnology Centre, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain; Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain. ' Institut Neel, CNRS, BP 166, 38042 Grenoble Cedex 9, France. ' Nanotechnology Centre, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain; Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain. ' Nanotechnology Centre, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain; Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain

Abstract: The total density of states (DOS) deduced from the band structure calculations for the system Zn_0.9M_0.1O (M is a transition metal) has been successfully carried out. It is observed that the presence of a small gap only in the major state density which evidences and confirms the spintronic character of the compound. Single nanosized Zn_1−xM_xO phase has been successfully synthesised using mechanical alloying (ZnO and M_xO_y precursors) with a subsequent annealing at relatively low temperatures. XRD patters of the milled mixture shows the presence mainly of ZnO phase with broad peaks, an indication of an important reduction of the particle size to the nanometer scale. After annealing, both X-ray diffraction and magnetic measurements show the effect of the nature of the metal M on the phase formation and magnetic properties.

Keywords: doped ZnO; zinc oxide; spintronics; band structure calculations; nanoparticles; magnetic behaviour; nanotechnology; phase formation; magnetic properties; semiconductor materials.

DOI: 10.1504/IJNP.2010.037138

International Journal of Nanoparticles, 2010 Vol.3 No.4, pp.341 - 348

Published online: 26 Nov 2010 *

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Title: Nano-sized doped ZnO – 10% M: semiconductor magnetic materials

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